Chapter 4

Question 1

Mineral

Answer 1

Naturally occurring crystalline substance

Question 2

Crystal

Answer 2

A solid with repeating patterns of atoms

Question 3

Magma

Answer 3

Molten material found beneath the surface of the Earth

Question 4

Silicates

Answer 4

Minerals that contain silicon and oxygen

Question 5

Luster

Answer 5

The way that a mineral reflects light

Question 6

Streak

Answer 6

The color of a mineral when it is in a powdered state

Question 7

Hardness

Answer 7

A measure of how easily a mineral can be scratched

Question 8

Cleavage

Answer 8

If a mineral splits in half easily and evenly

Question 9

Fracture

Answer 9

If a mineral breaks with rough edges

Question 10

Specific gravity

Answer 10

The ratio of a weight of a substance to an equal volume of water at 4 C

Question 11

Ore

Answer 11

A mineral that contains a useful substance

Question 12

Gems

Answer 12

Valuable minerals